12871000

素因数分解:

$2^3\times 5^3\times {\mathrm{61}}^1\times {\mathrm{211}}^1$

素因数の和:293

約数の個数: 64

約数和(自身を含む): 30756960

約数和(自身を除く): 17885960

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 61, 100, 122, 125, 200, 211, 244, 250, 305, 422, 488, 500, 610, 844, 1000, 1055, 1220, 1525, 1688, 2110, 2440, 3050, 4220, 5275, 6100, 7625, 8440, 10550, 12200, 12871, 15250, 21100, 25742, 26375, 30500, 42200, 51484, 52750, 61000, 64355, 102968, 105500, 128710, 211000, 257420, 321775, 514840, 643550, 1287100, 1608875, 2574200, 3217750, 6435500, 12871000]

約数ペア:

[(1, 12871000), (2, 6435500), (4, 3217750), (5, 2574200), (8, 1608875), (10, 1287100), (20, 643550), (25, 514840), (40, 321775), (50, 257420), (61, 211000), (100, 128710), (122, 105500), (125, 102968), (200, 64355), (211, 61000), (244, 52750), (250, 51484), (305, 42200), (422, 30500), (488, 26375), (500, 25742), (610, 21100), (844, 15250), (1000, 12871), (1055, 12200), (1220, 10550), (1525, 8440), (1688, 7625), (2110, 6100), (2440, 5275), (3050, 4220)]